Re: [RFC PATCH 2/2] iio: light: Add support for LTR559 chip

From: Daniel Baluta
Date: Thu Apr 09 2015 - 09:44:19 EST




On 04/09/2015 04:39 PM, Jonathan Cameron wrote:
On 31/03/15 11:37, Daniel Baluta wrote:
This device is register compatible with LTR501, with a minor difference for
ALS control register as showed below:

ALS Control register for LTR501:

7 6 5 4 3 2 1 0
+------+------+------+------+------+------+------+------+
| | | | |
| Reserved | Gain | SW | ALS Mode |
| | | Reset| |
+------+------+------+------+------+------+------+------+

ALS Control register for LTR559:

7 6 5 4 3 2 1 0
+------+------+------+------+------+------+------+------+
| | | | |
| Reserved | Gain | SW | ALS |
| | | Reset| Mode |
+------+------+------+------+------+------+------+------+

We handle this difference by introducing ltr501_chip_info.

Datasheet for LTR559 is at:
http://optoelectronics.liteon.com/upload/download/DS86-2013-0003/S_110_LTR-559ALS-01_DS_V1.pdf

Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
Looks good to me. Let us know when you've tested it ;)
Anyhow, one comment inline. It 'think' you can end up with a device probing
succesfully with no known name...

Good point.

thanks,
Daniel.

<snip>

- indio_dev->name = LTR501_DRV_NAME;
+ indio_dev->name = name;
Can name still be NULL? Needs a default value that makes sense.
indio_dev->modes = INDIO_DIRECT_MODE;

I will fix this and sync with Sathya for the LTR301 support.

thanks,
Daniel.
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